730 sr api developer jobs at 387 companies in Fairfield, CA
2d
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Sr. II Backend Engineer, Mobile API
San Mateo, California, United States
$176k-$220k/yr HybridFull Time
Extensive backend development experience with PHP, RESTful or GraphQL APIs, relational databases, distributed systems, cloud platforms, containers, CI/CD, production monitoring, and cross-team technical leadership.
PHP, Vue, TypeScript, MySQL, PostgreSQL, RabbitMQ, Valkey, Redis, Kafka, Firebase Cloud Messaging, APNs, Docker, Kubernetes, GitHub Actions, JWT, RESTful, GraphQL, iOS, Android, CI/CD
1mo
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Software Engineer, Developer API
New York City or San Francisco or United States or Canada or United Kingdom
$168k-$330k/yr HybridFull Time
5+ YOE5+ years backend engineering, experience building APIs/platforms, hands-on with Python, Temporal, and Postgres, familiarity with AI coding agents, strong ownership and developer-experience focus.
Python, Temporal, Postgres
3mo
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Sr. SW Test Engineer
Foster City, California, United States
$110k-$170k/yr HybridFull Time
2+ YOE2+ years experience with BS or 5+ years; strong API testing, automation, and QA; Agile tools; CI/CD; knowledge of Go/Scala; Jira/Confluence; distributed systems testing.
Jira, Confluence, SOAP UI, Postman, REST Client, Cucumber, Selenium, Gherkin, Jenkins, Go, Scala, Erlang, Git
1w
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Software Engineer, API Multimodal
San Francisco, California, United States
$293k-$385k/yr OnsiteFull Time
7+ YOE7+ years backend/infrastructure experience building and operating production APIs and distributed systems; proficiency with Python, Go, Rust, or TypeScript; strong systems fundamentals and product judgment.
Python, Go, Rust, TypeScript
1w
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Sr. Engineer, Software Development
New York City or Birmingham or Miami or Tampa or Blue Ash or Cincinnati or Los Angeles or San Francisco
$121k-$173k/yr HybridFull Time
5+ YOE5+ years software engineering experience with secure API/microservice development, cloud (Azure) and observability; 1+ year technical leadership; fintech or BaaS experience preferred.
C#, .NET, SQL, APIM, Azure SQL, Cosmos DB, Key Vault, Service Bus, Event Hubs, Datadog, Grafana, Git, OAuth2, Open API
4w
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Staff Software Engineer, API Platform
San Francisco or Seattle
OnsiteFull Time
12+ YOE5+ Mgmt12+ years technical experience,5+ years strategic technical leadership,experience with API design and infrastructure,proficient in Java/Ruby/Python/Go,strong communication and problem-solving skills.
Java, Ruby, Python, Go, Kafka, Kubernetes
1mo
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Sr Software Development Engineer, Product Engineering – API Platform & Agentic AI
Pleasanton, California, United States
$176k-$264k/yr HybridFull Time
8+ YOE8+ years software engineering experience; 5+ years with TypeScript or Python; Bachelor's in CS/Engineering or equivalent; strong algorithms, API design (REST/GraphQL/SOAP/OpenAPI), testing, observability, and mentoring skills.
TypeScript, Python, OpenAPI, Swagger, REST, SOAP, GraphQL, JUnit, ScalaTest, Postman, Mockito, JaCoCo, Scoverage, Git, Cursor, Claude Code, GitHub Copilot, MCP
1w
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Staff Software Engineer, API Platform
Seattle or South San Francisco
$224k-$336k/yr OnsiteFull Time
12+ YOE5+ Mgmt12+ years technical experience,5+ years technical leadership,experience with API design and infrastructure,proficiency in at least one of Java,Ruby,Python,Go,strong communication and problem-solving skills.
Java, Ruby, Python, Go, Kafka, Kubernetes
1mo
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Member of Technical Staff (Software Engineer, API Platform)
San Francisco or New York City
$220k-$405k/yr OnsiteFull Time
5+ YOE5+ years backend engineering with Python, Go, or Rust; strong high-traffic API design, AWS and Kubernetes experience, CI/CD and DevOps fluency; experience with AI APIs a plus.
Python, Go, Rust, AWS, Kubernetes, CI/CD
4w
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Senior Software Engineer - API Platform & Client Tooling
Bellevue or Livingston or New York City or San Francisco or Sunnyvale
$153k-$204k/yr OnsiteFull Time
Production Go experience, API design and versioning, client tooling/SDK/CLI or provider work, code-generation or compiler/tooling experience preferred, cross-team collaboration and mentorship.
Go, gRPC, protocol buffers, Buf, ConnectRPC, Terraform Plugin Framework, Cobra, CWIC
1mo
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Sr Aderant Engineer
Reston or San Diego or San Francisco or Washington or Wilmington or Phoenix or Los Angeles or Houston or Boston or Austin or Atlanta or Raleigh or Baltimore or New York or Dallas or Palo Alto or Short Hills or Minneapolis or Chicago or Seattle or Philadelphia or Miami
$113k-$179k/yr HybridFull Time
5+ YOE5+ years supporting Aderant Expert and enterprise financial/practice management systems, strong backend development and SQL skills, experience with integrations/APIs, bachelor's in CS/IT, analytical and troubleshooting ability.
Aderant Expert, SQL, APIs
4d
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Sr. Software Engineer
Burlingame or United States
$143k-$197k/yr HybridFull Time
6+ YOEBachelors in CS,6+ years building enterprise web apps using Python or Java/Spring,experience with multi-tenant systems and scalable REST APIs,proactive self-starter with strong problem-solving and communication skills.
Python, Java, Spring
4d
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Sr. Software Engineer - Test (SDET)
Scottsdale or San Francisco or Chicago or New York City
$106k-$130k/yr HybridFull Time
5+ YOEBachelor's degree required. 5+ years developing software or test automation using two of Java, Ruby, Node.js, or Objective-C. Experience with CI/CD, test automation for API/web/mobile, and test frameworks.
Java, Ruby, Node.js, Objective-C, GitLab, GIT, Eclipse, Android Studio, Xcode, Bamboo, Harness, Splunk, AppDynamics, Appium, Selenium, WebDriver, Rest-Assured, Cucumber, AWS, Kubernetes, BrowserStack, Perfecto Mobile, Device Anywhere, Amazon Device Farm
1mo
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Sr. Software Engineer, Platform
San Francisco or United States
$179k-$273k/yr RemoteFull Time
Strong backend engineering experience building production services/APIs, technical judgment for reliable integrations, ability to design incremental solutions for ambiguous workflows, and strong cross-team collaboration.
Salesforce
1mo
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Sr. Backend Engineer - Activations
San Francisco or New York City or Seattle or Little Rock
$130k-$197k/yr HybridFull Time
5+ YOE5+ years writing production code; strong Java/Scala/Golang skills; 3+ years with Big Data ecosystems (Spark, Hadoop/MR, Kafka); distributed systems and RESTful API experience; Spring Boot; cloud experience (GCP/AWS/Azure).
Java, Scala, Golang, Spark, Hadoop/MR, Kafka, RESTful APIs, OAuth, GCP, AWS, Azure, Spring Boot, Singlestore
3w
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Staff Software Engineer, Foundation Model API
San Francisco or Mountain View
$190k-$265k/yr OnsiteFull Time
8+ YOE8+ years backend/infrastructure experience, distributed systems, scalable APIs, cloud-native infra, real-time serving/ML infra/GPU orchestration, strong Scala/Go/Python skills, product ownership and customer engagement.
OpenAI, Anthropic, Gemini, Qwen, GPT-OSS, Llama, SageMaker, Vertex AI, Azure ML, FMAPI, Apache Spark™, Delta Lake, MLflow, Scala, Go, Python
5d
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Developer Relations Engineer
San Francisco, California, United States
$190k-$290k/yr OnsiteFull Time
5+ YOE5+ years in software development or developer relations, strong API and developer tools knowledge, excellent communication, English fluency, ability to travel, and experience producing technical content for developers.
1mo
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Sr. Software Development Engineer - Video Rendering
Seattle or San Francisco or San Jose
$174k-$331k/yr OnsiteFull Time
10+ YOE10+ years software engineering with deep GPU/graphics or rendering systems experience, strong modern C++, and knowledge of GPU APIs, shading languages, and performance debugging.
C++, DirectX 12, Metal, Vulkan, CUDA, OpenCL, HLSL, Slang, SPIR-V, DXIL, DXC, Nsight, PIX, TensorRT, ONNX Runtime
1mo
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Sr. Staff Software Engineer, iOS Search and Shopping Journeys
San Francisco or United States
$209k-$429k/yr HybridFull Time
10+ YOE10+ years building consumer-facing products, deep iOS/front-end expertise, cross-platform product strategy, experience with APIs and experimentation, strong communication and AI-assisted engineering skills.
iOS, Android, Web, APIs, AI, LLMs
2mo
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Sr. Professional Services Engineer Consultant
Raleigh or San Francisco or New York or United States
$132k-$175k/yr HybridFull Time
7+ YOE7+ years in customer-facing technical B2B SaaS roles; production-quality backend coding in JavaScript, Python, or Node.js; SQL and data modeling; APIs, webhooks, ETL, data pipelines; strong communication and technical leadership.
JavaScript, Python, Node.js, SQL, REST APIs, webhooks, Segment, Snowflake, BigQuery, dbt, Fivetran, Electronic Medical Records (EMR)
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